As many areas of central Tokyo try to woo new residents, Koto Ward is taking the opposite tack and virtually begging developers to stop constructing new apartment complexes.
The waterfront municipality has seen a residential building rush, with an influx of 26,000 new residents over the last five years.
Tens of thousands more are expected over the next decade, when huge redevelopment projects already approved by the ward supply 40,000 more units.